Yep found them.  Cracking resource and thanks again for your help.

Will order a pack of the FPW Prussian flags. Even if they are slightly incorrect I can probably use them as templates for the 1914 ones.  And at the risk of upsetting the purists they might just be "close enough"

This is the rear detail of the figure concerned



It is a close match to the WW1 sculpts.  The one on the left doesn't have the detail on the rear of the jacket that the one on the right does.  The lack of a helmet cover isn't noticeable

Regards